Refined viscous hydrocarbon oil



Patented Feb, 17, 1931 STATES THOMAS H. ROGERS, OF WHITING, INDIANA, ASSIGNOR TO STANDARD OIL COMPANY, OF WRITING, INDIANA, A CORPORATION OF INDIANA BEFINED VISCOUS HYDROCARIBON OIL No Drawing. Original application filed August 19, 1926, Serial filed November 7, 1928, Serial No.

This application is a division from Serial No. 130,351, filed August 19, 1926.

In the use of highly refined viscous hydrocarbon oils (from which substantially all asphaltic, constituents have been removed, for example, by treatment with strong or fuming sulphuric acid) for the lubrication of turbines, and in similar uses, it has been found that they rapidly discolor, become increasingly acid and their tendency to emulsify increases. It has now been found that these defects in the use of such oils may be to a substantial extent remedied by the addition to such oils of very small proportions (in general, not more than about 0.3%) of naphthols. Thus, betanaphthol has been successfully employed for this purpose. Thus, a turning acid treated white distillate oil of about 80 sec. Saybolt Viscosity at 100 F. which, without the addition of such a substance increased in acidity from 0.01 to 25 mgm. KOH equivalent per gram of oil in 100 hours and markedly decreased in demulsifiability, when oxygen was passed therethrough at a temperature of 100 0., the same oil to which 0.02% betanaphthol had been added, showed no increase in acidity, and no decrease in demulsifiability under like conditions.

The oils prepared in accordance with the present invention have the property of retaining their electrical resistivity to a high degree on aging.

I claim:

1. The method of preventing acid formation and increase of emulsifiability in use of highly refined viscous hydrocarbon oils, whichcomprises adding thereto a small proportion of a naphthol.

2. The method of preventing acid formation and increase of emulsifiability in use of highly refined viscous hydrocarbon oils, which com rises adding thereto a small proportion of etana-phthol.

3. The method of preventing acid formation and increase of emulsifiabllity in use of highly refined viscous hydrocarbon oils, which comprises adding thereto about 0.2% of a naphtho 4. The method of preventing acid forma- No. 130,351. Divided and this application 317,881. Renewed July 31, 1930.

tionand increase of emulsifiability in use of highly refined viscous hydrocarbon oils,

which comprises adding thereto about 0.2%

of bctanaphthol.

5. A highly refined white viscous hydrocarbon oil free from asphaltic'constituentsand containing about 0.2% of betanaphthol. In witness whereof, I have hereunto set my hand this 29th day of October, 1928.

THOMAS H. ROGERS. 

